One capsule of NOW Green Tea Extract with 200 mg EGCg possesses the phytonutrient content equal to about 2-3 cups of green tea. Green Tea Extract contains numerous compounds, including Polyphenols and Catechins, that provide potent antioxidant benefits. Laboratory studies suggest that one Catechin in particular, EGCg, has extraordinary free radical quenching power. Other non-clinical studies suggest EGCg has also been suggested to be protective against chemical and environmental assault on tissues.